Do yourself and everyone else a favor by installing the patch. It’s advantageous to install it before your PC goes to hades in a handbasket.

UPDATE: Seriously. Update your machine. Now.

UPDATE 2: For about a week I was getting google hits from people looking for “wicked screensaver” and “msblaster+fix”. They were poor souls who were trying to patch the holes after the goo got in. Install the patch. Before you’re trying to google for a fix in the minute and a half between crashes. I’m not kidding.